norton



(No Model.) 2 Sheets- Sheet 1.

E. NORTON an J. G.H0DGS0N. MACHINE FR MAKING SHEET METAL BARRELS.

`(No Model.)l 2 Sheets- Sheet 2. Y E. NORTON 8v J. G. HODGSON MACHINEFOR MAKING SHEET METAL BARRELS.

PatentedDeo. 21, 1886.

M fm Lf, 2@ 0 UNITED STATES PATENT OFFICE.

EDWIN NORTON AND 'JOHN G. HODGSON, OF CHICAGO, ILLINOIS, ASSIGNORS TOEDVIN NORTON AND OLIVER XV. NORTON, BOTH OF SAME PLACE.

MACHINE FOR MAKING SHEET-METAL BARRELS.

SPECIFICATION forming part of Letters Patent No. 354,570, dated December21, 1886. Application filed September 3, 1886. Serial No. 212,570. (Nomodel.)

To all whom 25v may concern:

Be it known that we, EDWIN NORTON and JOHN G. HoDGsoN, citizens of theUnited States, residing in Chicago, in the county of Cook and State ofIllinois, have invented a new and useful Improvement in Machines forManufacturing Sheet Metal Barrel Form Bodies, of which the following isa specification.

Our invention relates to the manufacture of barrel-form sheet-metalbodies having goreshaped or tapering longitudinal strengthening ribs orfolds marking the divisions between the staves.

The object of the invention is to provide a machine -to curve or form arectangular sheet of met-al into an approximately circular form, and atthe same time mark out or `partiall y form the gore-shape or taperinglongitudinal fold, which, when completed, gives 1 he body a barrel shapeby contracting its circumference more at each end than at the middle.

To this end our invention cbnsists in a pair of forming or curving rollsfurnished with in termeshing gore-shaped longitudinal grooves andprojections tapering from each end toward the middle, which serve toform a series of longitudinal gore shaped or tapering grooves or partialfolds in the sheet of metal at the time it is being curved into anapproxi` mately cylindrical form by the rolls and the curved guide orformer. By increasing or diminishing the "inclination of the sides ofthe tapering grooves and projections any desired degree of curvature maybe given to the body. Where the machine is designed simply to producestrengthening longitudinal ribs or folds in a cylindrical body withoutgiving it a curved or barrel form, the grooves and ribs on the rollswill be made of the same size throughout from one end to the other. Thenumber of the longitudinal grooves and ribs on the rolls may be varied,and will depend somewhat on the size of the rolls and the diameter ofthe sheetmetal body to be produced. Their distance apartcircumferentia'lly on the rolls will of course correspond to the widthof the staves to be made on the barrel-form body.

The invention also consists in the novel de- 5O vices and novelcombinations of devices herein shown and described, and moreparticularly l pointed out in the claims.

In the accompanying drawings, which form a part of this speciiication,and in which similar letters of reference indicate like parts, 5 5Figure lis an end view of a machine embodying our invention. Fig. 2 is afront elevation. Fig. 3 is a plan View. Fig. 4 is a crosssection of therolls on line 4L 4 of Fig. 3. Fig. 5 is a cross-section on line 5 5 ofFig. 8. Fig. V6 is a 6o detail central longitudinal section, showing theclutch mechanism; and Fig. 7 is a perspective view showing thesheet-metal body as formed by the machine, said body being ready to becompleted by pressing or squeezing the walls of the partially-formedfolds together. i

In said drawings, A represents the frame of the machine. B B are theforming-1'ollsjour naled in suitable bearings thereon. The up- 7o perroll, B, is furnished with one or more (preferably three) longitudinalgrooves, b', tapering from each end toward the middle, and the roll B isfurnished with corresponding tapering ribs or projections, b. The roll Bis furnished with cross beads or ribs b2, and the roll B withcorresponding cross-grooves, b3, to form the cross-beads representinghoops in the sheet-metal body.

C is a stationary curved guide or former, 8O which serves to curve thesheet into an approximately cylindrical form as it passes between therolls B B'.

A isa feed-table, and a a are feedguides for the edges of the sheet toabut against7 to in- 85 sure its being fed squarely to the rolls. Thegrooves b and ribs b are preferably of a triangular form ineross-section, as indicated in the drawings, so that the apex of thetriangle will mark the central line, d', of the fold d, 9o while themarginal lines d2 d2 of the fold will be marked by the outer edges ofthe groove and rib. In this way the grooves b and ribs b mark the lineand begin the folding of the stock on4 the lines whereon it is to becompleted 95 by the subsequent step of compressing the walls of the foldilat together.

As one of the folds d of the sheet D is formed by the similarabuttingilanges, d3 d3, on the Opposite edges of the sheet, which,when10o abutted together and soldered, constitute the side seam of thesheet-metal barrel-body, it is important that when the sheet is fed inbetween the rolls B B' its front edge should properly register with oneof the intermeshing grooves and ribs b b' of the rolls, and to effectthis we provide the rolls, or one of them, with a clutch adapted toalways stop the roll at the proper point for feeding in the next sheet,so that when the sheet is pushed in between the rolls and the rolls thenput in motion the edge of the sheet will properly register with one ofthe grooves and ribs b b' on the rollsB B'. The rolls BB' are gearedtogether by the spur-gears B2 B2 on their shafts. rlhe shaft B3 of thelower roll, B, is furnished with a loose spur-gear, F, which meshes withthe gear F', fixed .to the driving-shaft F2.

F3 is the drivingpulley.

G is the clutch-head, secured rigidly to the shaft BH The clutch-head isconnected to or disconnected from the loose gear F by means of thesliding pin or pawl g, which engages a projection, f, in the annularchamber or groove f', cut in the side face of the gear F. The slidingpin g is provided with a cam- 'shaped head or projection, g', preferablyan inverted-cone-shaped friction-roller, mounted on a stud, g2, whichprojects through a slot, g3, in the clutch head or wheel G.

H is a clutch-lever having a corresponding cam-face, h, adapted tooperate against the inclined or cone face of the projection orfriction-roller g' and disengage the pin g from the stop or projectionf. A spring, g4, serves to move the sliding pin g in the oppositedirection.

K is a stop lever or pawl pivoted to the frame or bracket thereon, theend of which engages a stop-notch, k, in the rim lc' of the clutch-headG. The levers H and K are simultaneously operated from a treadle orlever, L, through the connecting-rods L' and L2. The shaft B3 is alsofurnished with a friction-brake, M, which clamps the clutch-head G or acollar or shoulder turned thereon. The friction-clamps M are secured toa bracket, m, attached to the frame of the machine. The friction-brakeserves to stop, or tends to serve to stop, the revolution oi' the rollsB B' the instant the clutch-pin g is disengaged from the loose pulley F.The stop-lever K, however, causes a positive arrest of the revolution ofthe rolls at a xed point by its engagement with the notch or stop k.

In operation the spring L3 serves to hold or press the lever H down themoment the operators foot is removed from the treadle L, and as theclutch-head revolves the projection g' is carried around against thecam-surface h of the lever H, thereby retracting the sliding pin g fromthe gear F whensaid projection g' reaches its vertical position, asshown in Fig. 1, and at the same time the lever or pawl K engages thenotch k, and thus arrests the motion of the rolls B B' always at thesame point. After the front edge of the sheet is inserted between therolls, the operator, by placing his foot upon the treadle, disengagesthe stop-lever K from the notch 7c, and at the same time raises thelever H, and thus permits the sliding spring-pin g to engage the gear F.

The rolls B B are forced together with the requisite pressure by the adjusting-screws N.

The sheet-metal body or barrel herein referred to, as well as othermechanism used in the process of making the same, form thesubject-matter of separate applications filed of even date herewith byEdwin Norton, and are not herein claimed. v

The longitudinal grooves and ribs b b' taper on slightly-curved lines,as indicated in Figs. Y

2 and 3, and also in Fig. 7, so as to give the body a true barrel shapeor curvature from end to end.

Ve claiml. The rolls B B', furnished with a longitudinal gore-shaped ortapering intermeshing groove and rib, substantially as specified.

2. The rolls B B', furnished with a longitudinal gore-shaped or taperinginter-meshing groove and rib, in combination with a curved guideorvformer, C, substantially as specified.

3. The rolls B B', furnished with a longitudinal gore-shaped or taperingintermeshing groove and rib, in combination with a clutch mechanismadapted to stop and start said rolls always at a certain point, so thatsaid rib and groove will register with the front edge of the sheet,substantially as specified.

4. The combination of the rolls B B', furnished with intermeshinglongitudinal triangular grooves and ribs b b', said rolls having smoothintervals between the contiguous grooves or ribs thereon, with a curvedguide or former, (l, and mechanism for stopping and starting said rollsalways at a certain point, so that one pair of said ribs and grooveswill register with the front edge of the sheet, substantially asspecied.

5. The combination of the rolls B B', furnished with intermeshin glongitudinal ribs and grooves,with loose gear F,having slot or groovef', projection f, clutch-head G, having sliding pin g, provided withprojection g', lever H, having cam-surface h, stop-lever K,operatinglever L, and connecting-rods L' L2,substantiall y as specified.

6. The combination of the rolls B B', furnished with intermeshin glongitudinal ribs and grooves, with loose gear F,havin g slot or groovef', projection f, clutch-head G, having sliding pin g, provided withprojection g', lever H, having cam-surface h, stop-lever K,operatinglever Lconnectingrods L' L2, and frictionbrake M, substantiallyas specified.

7. The combination of the rolls BB', furnished with intermeshinglongitudinal triangular grooves and ribs b b', with a curved guide orformer, C, mechanism for stopping and starting said rolls always at acertain point, table A', and feed-guides a a, substantially as specied.

8. The rolls B B', furnished with internleshing longitudinal gore shapedor tapering l0. The rolls B B', furnished with longi- 1o grooves andribs b b', and transverse orosstudinal ntermeshing grooves and ribs bb', tabeads and grooves b2 b3, to form thehoops,sub pering on curvedlines from each end toward stantially as specified. the middle,substantially as specified.

9. The rolls B B', furnished with intermesh- EDWIN NORTON. inggore-shaped or tapering longitudinal g u JOHN G. HODGSON. grooves b b',triangular `in cross-section, and Witnesses: transverse hoop-beads andgrooves b2 b3, sub- Y S. W. NORTON,

stantially as specified. O. R. SWIFT.

